US10276953B2 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US10276953B2
US10276953B2 US15/869,332 US201815869332A US10276953B2 US 10276953 B2 US10276953 B2 US 10276953B2 US 201815869332 A US201815869332 A US 201815869332A US 10276953 B2 US10276953 B2 US 10276953B2
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arm
bending
slot
extending
electrical connector
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US15/869,332
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US20180331441A1 (en
Inventor
Chang Wei Huang
Zhi Youg Zhou
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Lotes Co Ltd
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Lotes Co Ltd
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Assigned to LOTES CO., LTD reassignment LOTES CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, CHANG WEI, ZHOU, ZHI YOUG
Publication of US20180331441A1 publication Critical patent/US20180331441A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/26—Pin or blade contacts for sliding co-operation on one side only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2442—Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2464—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point
    • H01R13/2492—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point multiple contact points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/41—Securing in non-demountable manner, e.g. moulding, riveting by frictional grip in grommet, panel or base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/18—Two-pole devices having only abutting contacts

Definitions

  • the present invention relates to an electrical connector, and in particular, to an electrical connector in which a high-frequency signal may be transmitted and a terminal has multiple conductive paths.
  • Chinese Patent Application No. CN200920311973.1 discloses an electrical connector, including an insulating body and conductive terminals accommodated in the insulating body.
  • the conductive terminal includes a base portion, retaining portions extending upward from two sides of the base portion, and an elastic arm bending upward and extending from the base portion. An end of the elastic arm is provided with a contact portion abutting a chip module.
  • a chip module has an increasingly large quantity of conductive pads, and the conductive pads are arranged increasingly densely. Therefore, the terminals in the electrical connector are also arranged increasingly densely. Consequently, a self-inductance effect is easily generated in the terminals during signal transmission, and particularly high-frequency signal transmission, and then crosstalk is generated between neighboring terminals due to a self-inductance effect of the terminals. As a result, the electrical connector has a poor high-frequency signal transmission capability, and actual requirements cannot be satisfied.
  • an objective of the present invention is to provide an electrical connector, which has a preferable high-frequency signal transmission capability by a slot which is formed on a contact portion and an elastic arm of a terminal to reduce self-inductance and crosstalk.
  • An electrical connector for electrically connecting with a chip module includes: an insulating body; and a plurality of terminals, respectively and correspondingly accommodated in the insulating body, each of the terminals having: a base portion having a vertical plane; a first arm, bending and extending upward from the base portion toward a direction away from the vertical plane; a second arm, bending and extending reversely from the first arm and crossing the vertical plane, wherein the second arm is configured to abut the chip module; and a through-slot, running through the second arm vertically, wherein the through-slot at least extends to a bending location between the second arm and the first arm, so that the second arm forms two branches at two opposite sides of the through-slot, and the second arm has a beam connecting the two branches.
  • the terminals are formed by punching a metal plate, and a width of the through-slot is greater than a thickness of each of the terminals and less than a width of each of the branches.
  • the beam is disposed at an end of the second arm.
  • the second arm comprises an extending arm connected to the first arm and a contact portion bending and extending upward from the extending arm and configured to abut the chip module, the through-slot extends to the contact portion, and a width of the through-slot in the contact portion is less than a width of the through-slot in the extending arm.
  • the width of the through-slot in the contact portion is a constant width.
  • the second arm is provided with two protruding portions protruding upward symmetrically located at the two opposite sides of the through-slot, and the two protruding portions simultaneously abut a same pad of the chip module.
  • the beam abuts the chip module.
  • the beam is provided with a protruding portion protruding upward and configured to abut the chip module.
  • the through-slot extends to a connecting location between the first arm and the base portion.
  • the through-slot extends downward only to the bending location between the second arm and the first arm.
  • a width of the through-slot in the second arm is a constant width.
  • the second arm comprises an extending arm and a contact portion bending and extending from the extending arm, the beam is disposed at a connecting location between the extending arm and the contact portion, and the through-slot runs through a free end of the contact portion, so that the contact portion forms two free ends.
  • the second arm has a contact portion configured to abut the chip module, and an upper surface of the contact portion slants downward to form a chamfering surface, so that a contact area between the contact portion and the chip module is reduced.
  • the base portion bends and extends downward to form a bending portion, the bending portion bends and extends to form a conducting portion configured to be conductively connected to a circuit board, and a through-hole runs through the base portion and the bending portion and does not run through the conducting portion.
  • the embodiments of the present invention have the following beneficial effects.
  • the through-slot runs through the second arm vertically, and the through-slot at least extends to a bending location between the second arm and the first arm, so as to reduce the self-inductance effect of the terminals during signal transmission, avoid crosstalk between adjacent terminals, and improve the high-frequency signal transmission capability of the terminals.
  • an electrical connector for electrically connecting with a chip module includes: an insulating body; and a plurality of terminals, respectively and correspondingly accommodated in the insulating body, each of the terminals having: a base portion; an elastic arm, bending and extending upward from one end of the base portion, and configured to abut the chip module; a through-slot, running through the elastic arm, wherein in an extending direction of the elastic arm, a length of the through-slot is greater than sixty percent of a length of the elastic arm, the elastic arm forms two branches at two opposite sides of the through-slot, and the elastic arm has a beam connecting the two branches; a bending portion, formed by bending and extending downward from an opposite end of the base portion; a through-hole, extending from the base portion to the bending portion; and a conducting portion, formed by bending and extending from the bending portion, and configured to be conductively connected to the circuit board, wherein the through-hole does not run through the conducting portion.
  • the through-slot extends downward to a connecting location between the elastic arm and the base portion.
  • the elastic arm has a contact portion configured to abut the chip module, and the through-slot runs through the contact portion to a free end of the contact portion, so that the contact portion forms two free ends and two contact areas simultaneously abutting a same pad of the chip module.
  • the conducting portion comprises a connecting portion bending downward and extending from the bending portion, and two clamping portions bending and extending from two opposite sides of the connecting portion and jointly clamping a solder, the bending portion and the connecting portion are located at a same side of the base portion, and along a downward direction, a width of the bending portion is gradually reduced.
  • the through-hole comprises a first through-hole disposed in the base portion, the first through-hole has a top edge and a side edge extending obliquely downward from the top edge, and the top edge and the side edge form an obtuse angle.
  • the through-hole comprises a second through-hole disposed in the bending portion, and along a downward direction, a width of the second through-hole is gradually reduced.
  • the embodiments of the present invention have the following beneficial effects.
  • the length of the through-slot is greater than sixty percent of the length of the elastic arm, so as to reduce the self-inductance effect of the terminals during signal transmission, and avoid crosstalk between neighboring terminals.
  • the through-hole runs through the base portion and the bending portion and does not run through the conducting portion, so that each of the terminals form four conductive paths, including two conductive paths that are parallel to each other from top to bottom and are from two opposite sides of the through-slot and the through-hole, and two crossed conductive paths that are from the left side of the through-slot to the right side of the through-hole and from the right side of the through-slot to the left side of the through-hole.
  • FIG. 1 is a perspective view of a terminal of an electrical connector according to a first embodiment of the present invention
  • FIG. 2 is a schematic local perspective sectional view of the electrical connector according to the first embodiment of the present invention.
  • FIG. 3 is a schematic view of FIG. 2 being inversed 180°;
  • FIG. 4 is a schematic sectional view of the electrical connector according to the first embodiment of the present invention.
  • FIG. 5 is a schematic sectional view from another viewing angle of the electrical connector according to the first embodiment of the present invention, before the electrical connector is soldered to a circuit board and before a chip module is installed;
  • FIG. 6 is a two-dimensional sectional view the electrical connector according to the first embodiment of the present invention, after the electrical connector is soldered to the circuit board and after a chip module is installed;
  • FIG. 7 is an enlarged view of a part a in FIG. 6 ;
  • FIG. 8 is a perspective view of a terminal of the electrical connector according to a second embodiment of the present invention.
  • FIG. 9 is a schematic local plain sectional view of the electrical connector according to the second embodiment of the present invention after a chip module is press-fit to a terminal;
  • FIG. 10 is a perspective view of a terminal of an electrical connector according to a third embodiment of the present invention.
  • FIG. 11 is a schematic sectional view of the electrical connector according to the third embodiment of the present invention, before the electrical connector is soldered to a circuit board and before a chip module is installed;
  • FIG. 12 is a schematic sectional view of the electrical connector according to the third embodiment of the present invention, after the electrical connector is soldered to a circuit board and after a chip module is installed;
  • FIG. 13 is an enlarged view of a part b in FIG. 12 .
  • FIG. 14 is a perspective view of a terminal of an electrical connector according to a fourth embodiment of the present invention.
  • FIG. 15 is a schematic local plain sectional view of the electrical connector according to the fourth embodiment of the present invention after a chip module is press-fit to a terminal;
  • FIG. 16 is a perspective view of a terminal of an electrical connector according to a fifth embodiment of the present invention.
  • FIG. 17 is a schematic sectional view of the electrical connector according to the fifth embodiment of the present invention, before the electrical connector is soldered to a circuit board and before a chip module is installed;
  • FIG. 18 is a plain sectional view of the electrical connector according to the fifth embodiment of the present invention, after the electrical connector is soldered to the circuit board and after a chip module is installed;
  • FIG. 19 is an enlarged view of a part C in FIG. 18 ;
  • FIG. 20 is a perspective view of a terminal of a sixth embodiment of the electrical connector according to the present invention.
  • FIG. 21 is a schematic perspective sectional view of the electrical connector according to the sixth embodiment of the present invention.
  • FIG. 22 is a perspective view of a terminal of an electrical connector according to a seventh embodiment of the present invention.
  • relative terms such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure.
  • “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
  • this invention in one aspect, relates to an electrical connector.
  • FIG. 2 , FIG. 5 and FIG. 6 show an electrical connector 100 according to a first embodiment of the present invention.
  • the electrical connector 100 of the embodiment of the present invention is used to electrically connect a chip module 3 to a circuit board 4 , and includes an insulating body 1 and multiple terminals 2 retained in the insulating body 1 . One end of each of the terminals 2 elastically abuts the chip module 3 , and another end is soldered to the circuit board 4 by a solder 5 .
  • the insulating body 1 is provided with multiple accommodating holes 11 that are arranged in a matrix, run through the insulating body 1 vertically, and correspondingly accommodate the terminals 2 .
  • Each of the accommodating holes 11 is provided with a first stopping surface 12 and a second stopping surface 13 .
  • the first stopping surface 12 stops the terminal 2
  • the second stopping surface 13 stops the solder 5 , so as to limit upward movement of the terminal 2 and the solder 5 by stopping functions of the first stopping surface 12 and the second stopping surface 13 .
  • the first stopping surface 12 and the second stopping surface 13 have a same height. That is, the two are located on a same horizontal plane. In other embodiments, the first stopping surface 12 and the second stopping surface 13 may have different heights.
  • the terminals 2 are formed by punching a metal plate, and each has a base portion 21 .
  • the base portion 21 has a vertical plane 201 .
  • a strip connecting portion 29 extends vertically upward and an elastic arm 22 bends and extends upward from an upper end of the base portion 21 .
  • the strip connecting portion 29 is used to connect to a strip (not shown), and the elastic arm 22 elastically abuts the chip module 3 .
  • the elastic arm 22 includes a first arm 23 bending and extending upward from the base portion 21 toward a direction away from the vertical plane 201 , and a second arm 24 reversely bending and extending from the first arm 23 and crossing the vertical plane 201 .
  • the second arm 24 includes an extending arm 241 connected to the first arm 23 , and a contact portion 242 bending and extending upward from the extending arm 241 .
  • the contact portion 242 abuts a pad of the chip module 3 upward.
  • An upper surface of the contact portion 242 slants downward to form a chamfering surface 2421 , so that a contact area between the contact portion 242 and the pad of the chip module 3 is reduced, so as to reduce a risk of the contact portion 242 slipping off from the pad of the chip module 3 .
  • a through-slot 25 runs through the elastic arm 22 vertically, and the through-slot 25 extends upward to the contact portion 242 , and extends downward to a connecting location between the first arm 23 and the base portion 21 .
  • a length of the through-slot 25 in the elastic arm 22 is increased to a maximum extent, so as to reduce the self-inductance of the elastic arm 22 and crosstalk between neighboring terminals 2 , and also increase the elasticity of the elastic arm 22 .
  • the through-slot 25 may not extend to the connecting location between the first arm 23 and the base portion 21 . As long as a length of the through-slot 25 is greater than sixty percent of the length of the elastic arm 22 along an extending direction of the elastic arm 22 , the self-inductance effect of the terminal 2 may be significantly reduced.
  • a width of the through-slot 25 is first kept constant, then gradually reduced, and then kept constant again, so that the width of the through-slot 25 in the contact portion 242 is a constant width, and the width of the through-slot 25 in the contact portion 242 is less than the width of the through-slot 25 in the extending arm 241 , so as to facilitate the elastic structure requirement of all of the terminals 2 .
  • the second arm 24 forms two branches 202 at two opposite sides of the through-slot 25 respectively, and on each of the branches 202 , the contact portion 242 is formed with a contact area urging the chip module 3 .
  • each of the terminals 2 has two contact areas abutting the chip module 3 , so as to increase contact points between the terminal 2 and the chip module 3 , and improve the high-frequency signal transmission capability of the terminal 2 .
  • An end of the second arm 24 has a beam 243 , and the beam 243 connects the two branches 202 , so as to prevent the two branches 202 from excessively moving toward a direction away from each other and causing undesired contact between the contact portion 242 and the chip module 3 .
  • the width of the through-slot 25 is greater than the thickness of the terminal 2 and less than the width of each branch 202 , thereby avoiding the width of the through-slot 25 to be excessively large to cause relatively poor strength of the terminal 2 , and avoiding the width of the through-slot 25 to be excessively small to cause excessively small impact on the self-inductance effect of the terminal 2 . Therefore, a balance between the structure strength of the terminal 2 and the function requirement of the terminal 2 is achieved.
  • a bending portion 26 is formed by bending and extending downward from the base portion 21 , and the bending portion 26 and the first arm 23 are located at a same side of the vertical plane 201 .
  • a conducting portion 28 is formed by bending and extending from the bending portion 26 , and is used to conduct the circuit board 4 .
  • the conducting portion 28 includes a connecting portion 281 bending downward and extending from the bending portion 26 , and two clamping portions 282 bending and extending from two opposite sides of the connecting portion 281 and jointly clamping the solder 5 , and the conducting portion 28 is soldered to the circuit board 4 by the solder 5 .
  • the bending portion 26 and the connecting portion 281 are located at a same side of the base portion 21 , and along a downward direction, a width of the bending portion 26 is gradually reduced, so as to increase the elasticity of the bending portion 26 .
  • a stopping portion 2821 projects upward from the clamping portion 282 , and stops below the first stopping surface 12 , so as to prevent the clamping portion 282 from excessively moving upward when the solder 5 is loaded, and ensure that the clamping portion 282 stably clamps the solder 5 so that the terminal 2 and the circuit board 4 are stably soldered.
  • a through-hole 27 runs through the base portion 21 and extends from the base portion 21 to the bending portion 26 but does not extend to the conducting portion 28 . That is, the through-slot 25 runs through the base portion 21 and the bending portion 26 and does not run through the conducting portion 28 . In this way, the self-inductance effect of the terminal 2 may be further reduced, and it is ensured that the conducting portion 28 has sufficient strength.
  • the through-hole 27 includes a first through-hole 271 disposed in the base portion 21 and a second through-hole 272 disposed in the bending portion 26 .
  • the first through-hole 271 has a top edge 2711 and a side edge 2712 extending obliquely downward from the top edge 2711 .
  • the top edge 2711 and the side edge 2712 form an obtuse angle, and along a downward direction, the width of the second through-hole 272 is gradually reduced.
  • each of the terminals 2 may form four conductive paths, including two conductive paths that are parallel to each other from top to bottom and are from two opposite sides of the through-slot 25 and the through-hole 27 , and two crossed conductive path that are from the left side of the through-slot 25 to the right side of the through-hole 27 and from the right side of the through-slot 25 to the left side of the through-hole 27 .
  • the high-frequency signal transmission capability of the terminal 2 may be improved.
  • FIG. 8 and FIG. 9 show an electrical connector 100 according to a second embodiment of the present invention.
  • This embodiment mainly differs from the first embodiment in that, in this embodiment, two symmetrical protruding portions 244 protrude upward from the contact portion 242 and are respectively located at two branches 202 , and the two protruding portions 244 simultaneously abut a same pad of the chip module 3 . In this way, the contact area between the terminal 2 and the pad of the chip module 3 may be reduced.
  • the remaining structures and functions thereof are completely the same as those of the first embodiment, and details are not elaborated herein.
  • FIG. 10 to FIG. 13 show an electrical connector 100 according to a third embodiment of the present invention.
  • the third embodiment mainly differs from the first embodiment in that: the beam 243 directly abuts the chip module 3 .
  • the remaining structures and functions thereof are completely the same as those of the first embodiment, and details are not elaborated herein.
  • FIG. 14 and FIG. 15 show an electrical connector 100 according to a fourth embodiment of the present invention.
  • the fourth embodiment mainly differs from the third embodiment in that: a protruding portion 244 protrudes upward from the beam 243 , and urges the chip module 3 .
  • the remaining structures and functions thereof are completely the same as those of the third embodiment, and details are not elaborated herein.
  • FIG. 16 to FIG. 19 show an electrical connector 100 according to a fifth embodiment of the present invention.
  • the fifth embodiment mainly differs from the first embodiment in that: the beam 243 is disposed at a connecting location between the extending arm 241 and the contact portion 242 , and the through-slot 25 runs through the free end of the contact portion 242 , so that the contact portion 242 forms two free ends.
  • the remaining structures and functions thereof are completely the same as those of the first embodiment, and details are not elaborated herein.
  • FIG. 20 and FIG. 21 show an electrical connector 100 according to a sixth embodiment of the present invention.
  • the fifth embodiment mainly differs from the first embodiment in that: in this embodiment, the through-slot 25 extends downward only to a bending location between the second arm 24 and the first arm 23 . That is, the through-slot 25 does not run through the first arm 23 , and the width of the through-slot 25 in the second arm 24 is a constant width.
  • the through-hole 27 does not run through the base portion 21 , and the strip connecting portion 29 extends upward from the base portion 21 at each of left and right sides of the elastic arm 22 , so that each of the terminals 2 has two strip connecting portions 29 .
  • the remaining structures and functions thereof are completely the same as those of the first embodiment, and details are not elaborated herein.
  • FIG. 22 shows an electrical connector 100 according to a seventh embodiment of the present invention.
  • the seventh embodiment mainly differs from the sixth embodiment in that: the clamping portion 282 does not extend upward to form the stopping portion 2821 .
  • the remaining structures and functions thereof are completely the same as those of the sixth embodiment, and details are not elaborated herein.
  • the electrical connector 100 according to certain embodiments of the present invention has the following beneficial effects.
  • the through-slot 25 runs through the second arm 24 vertically, and the through-slot 25 at least extends to a bending location between the second arm 24 and the first arm 23 , so as to reduce the self-inductance effect of the terminals 2 during signal transmission, avoid crosstalk between neighboring terminals 2 , and improve the high-frequency signal transmission capability of the terminals 2 .
  • the second arm 24 forms two branches 202 at two opposite sides of the through-slot 25 .
  • the second arm 24 has a beam 243 , and the beam 243 connects the two branches 202 , so as to prevent the two branches 202 from excessively moving toward a direction away from each other and causing undesired contact between the contact portion 242 and the chip module 3 .
  • the through-slot 25 runs through the elastic arm 22
  • the through-hole 27 runs through the base portion 21 and the connecting portion 281 , so that each of the terminals 2 form four conductive paths, including two conductive paths that are parallel to each other from top to bottom and are from two opposite sides of the through-slot 25 and the through-hole 27 , and two crossed conductive paths that are from the left side of the through-slot 25 to the right side of the through-hole 27 and from the right side of the through-slot 25 to the left side of the through-hole 27 .
  • the high-frequency signal transmission capability of the terminals 2 may be improved.
  • An upper surface of the contact portion 242 slants downward to form a chamfering surface 2421 , so that the contact area between the contact portion 242 and the pad of the chip module 3 is reduced, so as to reduce a risk of the contact portion 242 slipping off from the pad of the chip module 3 .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
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US10615527B2 (en) * 2018-06-22 2020-04-07 Lotes Co., Ltd Electrical connector
US10833442B2 (en) * 2018-08-17 2020-11-10 Fuding Precision Components (Shenzhen) Co., Ltd. Electrical connector with aligned contacting points between CPU and PCB
USD909312S1 (en) * 2018-11-08 2021-02-02 Fuding Precision Components (Shenzhen) Co., Ltd. Electrical contact
US10944196B2 (en) * 2018-11-28 2021-03-09 Lotes Co., Ltd Electrical connector
US11183784B2 (en) * 2018-12-19 2021-11-23 Tyco Electronics Japan G.K. Interposer and method for manufacturing interposer
US11309646B2 (en) * 2019-10-22 2022-04-19 Lotes Co., Ltd Electrical connector having terminals with reduced height
US11431118B2 (en) * 2019-12-26 2022-08-30 Foxconn (Kunshan) Computer Connector Co., Ltd. Electrical connector having extension arms electrically connected with electronic module, extension arms extended from connecting part and multiple connecting part

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